calling all manual trans techs....HELP!!!!!
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Freshman User
Joined: Jul 2005
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From: abilene, kansas
calling all manual trans techs....HELP!!!!!
am still having troubles with the M50D 5 speed in my 88 F150
here's what i am experiencing:very hard to get into first gear,other gears are ok.
just changed the lube in the trans, replaced with correct fluids.
using the clutch,i went thru the gears with the engine off, and it shifted thru all gears smoothly. is there an adjustment i can make?
so, what am i dealing with? was told the slave cyl may be weak,or is it the master cyl?? or shifter??
please help!! this is a good running truck,and i like it
here's what i am experiencing:very hard to get into first gear,other gears are ok.
just changed the lube in the trans, replaced with correct fluids.
using the clutch,i went thru the gears with the engine off, and it shifted thru all gears smoothly. is there an adjustment i can make?
so, what am i dealing with? was told the slave cyl may be weak,or is it the master cyl?? or shifter??
please help!! this is a good running truck,and i like it
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Joined: Jan 2002
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From: Baltimore
Doesn't sound good.
If only first gear has a problem with the engine running when you shift, it can't be the clutch master cylinder or slave cylinder.
Since you can shift into first with the engine off, that basically eliminates a shifter or shifter fork problem.
Most likely it's a bad first gear synchronizer ring or the teeth on first gear that the the clutch hub slides over.
First and Second gear share a common shifter fork.
When you shift into first or second, the fork moves a common clutch hub/ sleeve assembly either forward or backward depending on the gear you're shifting into. The clutch hub then slides over the synchronizer teeth and then slides over the teeth of the gear you're shifting to.
If you can pull the trans. and do the work your self, the syncronizer rings are available individually. A complete kit of 6 runs around $50.00.
There is a company on E-bay that sells rebuilt M05R2's for $625 and you pay shipping for your core return.
If only first gear has a problem with the engine running when you shift, it can't be the clutch master cylinder or slave cylinder.
Since you can shift into first with the engine off, that basically eliminates a shifter or shifter fork problem.
Most likely it's a bad first gear synchronizer ring or the teeth on first gear that the the clutch hub slides over.
First and Second gear share a common shifter fork.
When you shift into first or second, the fork moves a common clutch hub/ sleeve assembly either forward or backward depending on the gear you're shifting into. The clutch hub then slides over the synchronizer teeth and then slides over the teeth of the gear you're shifting to.
If you can pull the trans. and do the work your self, the syncronizer rings are available individually. A complete kit of 6 runs around $50.00.
There is a company on E-bay that sells rebuilt M05R2's for $625 and you pay shipping for your core return.
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From: Willamette Valley, Oregon
I would suggest checking out your clutch. If your clutch and pressure plate is worn then it would be hard to get into first and reverse as those gears need the clutch to operate best for to shift when the vehicle is not moving. Is it hard to get into reverse? If yes, check your clutch and pressure plate before you condem your trans!
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From: Roland, Ar
I had the same problem with my '89 until I replaced the slave cylinder. If you pump the pedal a few times will it go into 1st with no problem? Are you having to add fluid to your clutch master cylinder?
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From: abilene, kansas
Originally Posted by Ponyracer
I would suggest checking out your clutch. If your clutch and pressure plate is worn then it would be hard to get into first and reverse as those gears need the clutch to operate best for to shift when the vehicle is not moving. Is it hard to get into reverse? If yes, check your clutch and pressure plate before you condem your trans!
thans for the info!!
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From: Baltimore
Originally Posted by Ponyracer
I would suggest checking out your clutch. If your clutch and pressure plate is worn then it would be hard to get into first and reverse as those gears need the clutch to operate best for to shift when the vehicle is not moving.
Can you explain in detail your reasoning that first and reverse need the clutch to operate best for shifting when the vehicle is not moving?
If his problem with first gear is when the vehicle is moving
are you saying a worn clutch or pressure plate would only effect first gear?
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Jeffwrecker, I had a similar problem with my transmission a few months back. When I tried to put it into first it would grind and not want to go into gear however if I put it into second first and then slid it into first it went in fine. A few weeks later I had problems with 3rd gear, I would be driving and it would pop out of gear and grind a little when I tried to put it back in. Anyways I did the opposite of you and kind of ignored it and about two weeks ago my transmission stuck in 3rd permanently. I am now putting a whole new transmission in my truck this weekend. I know this post is not a lot of help but I wish you luck in finding the problem so you don't end up where I am at. Here is the post I originally posted on my problems, hope it may help. I am going to pull apart the bad transmission Saturday or Sunday and will take pictures and post what was wrong.
https://www.ford-trucks.com/forums/s...ck+in+3rd+gear
Good Luck.
Anthony
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93' F-150 XLT 4x4, 302, 5 spd
https://www.ford-trucks.com/forums/s...ck+in+3rd+gear
Good Luck.
Anthony
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93' F-150 XLT 4x4, 302, 5 spd
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Posting Guru
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From: Willamette Valley, Oregon
First and reverse are used most when the vehicle is not moving and the engine is running so the trans needs the clutch the most to slow/stop the input shaft and allow the two lowest gears to synch. In my experience working at a dealership for 11 years, we found that for the most part if you are having trouble with first gear you will also be having trouble with reverse and most of the time it was a weak master/slave, worn clutch disc or a bad pressure plate not a trans problem. But if let go for a long period of time can end up to be a trans problem.
And actually he never said that he was trying to put it into first while the vehicle was moving
And actually he never said that he was trying to put it into first while the vehicle was moving
Last edited by Ponyracer; Jul 29, 2005 at 01:52 PM.
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From: Willamette Valley, Oregon
after the vehicle is moving, you can usually shift with out using your clutch if you find that sweet spot where the engine RPMs and the trans are in synch. So with that the clutch is not needed to work up to its optimum potential during these shifts.
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From: Willamette Valley, Oregon
also you dont know how many times I have had a trans concern come in and find out that the customer has been filling the reservoir thinking they had a leak but not removing the rubber cup that is inside so the reservoir just goes empty!
that was added to lighten up this thread!!
that was added to lighten up this thread!!
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Not likely based on previous info, but check your clutch master mount and linkage mounts. Some '80s trucks had flexing firewalls which reduces the travel at then end of the line. '80s Econolines have the same issue with the floor flexing where the clutch master mounts.
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From: abilene, kansas
Originally Posted by 85e150six4mtod
Not likely based on previous info, but check your clutch master mount and linkage mounts. Some '80s trucks had flexing firewalls which reduces the travel at then end of the line. '80s Econolines have the same issue with the floor flexing where the clutch master mounts.
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From: Concrete WA
Jeff
For what it is worth my 95 did the same, started being hard to get in to first gear, once it was going all other gears worked. Finaly got to the point of not going in 1st gear. Installed a new master/slave set and workes great.
For what it is worth my 95 did the same, started being hard to get in to first gear, once it was going all other gears worked. Finaly got to the point of not going in 1st gear. Installed a new master/slave set and workes great.
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From: Baltimore
Originally Posted by Ponyracer
In my experience working at a dealership for 11 years, we found that for the most part if you are having trouble with first gear you will also be having trouble with reverse and most of the time it was a weak master/slave
Originally Posted by Ponyracer
or worn clutch disc
Originally Posted by Ponyracer
or a bad pressure plate not a trans problem.
Engage the clutch pedal and start the engine in first gear or reverse. Does the truck lurch forward or reverse?
If it doesn't, the clutch is disengaging.
Originally Posted by Ponyracer
And actually he never said that he was trying to put it into first while the vehicle was moving
Also on a side note as the clutch disc wears, more fluid ends up in the master cylinder reservoir.
Last edited by F150xlt; Jul 29, 2005 at 05:44 PM.